.img-calavera {
  background-image: url(../img/up.png);
  background-repeat: no-repeat;
  background-position: center;
  /* background-size: contain; */
  height: 7rem;
  width: 7rem;
  border-radius: 65%;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.1);
  background-size: 70%;
  background-color: #361154;
}
.img-calavera-down {
  background-image: url(../img/down.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  height: 10rem;
  width: 10rem;
}
.row-calavera {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.img-calavera:hover {
  background-image: url(../img/up-white.png);
  background-repeat: no-repeat;
  background-position: center;
  /* background-size: contain; */
  height: 7rem;
  width: 7rem;
  transition: 3s;
  animation-name: vibrate-3;
  animation-iteration-count: infinite;
  animation-duration: 1s;
  background-size: 70%;
  background-color: #361154;
}
.img-calavera-down:hover {
  background-image: url(../img/down-white.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  height: 10rem;
  width: 10rem;
  transition: 2s;
  animation-name: heartbeat;
  animation-duration: 2s;
  animation-iteration-count: infinite;
}

.letter {
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-style: normal;
  font-size: 3rem;
  color: #fff;
  text-align: left;
}
.letter span {
  color: #ffb000;
}

.box-letter {
  padding: 0 2rem;
}

/* animación */

.rotate-in-center {
  -webkit-animation: rotate-in-center 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94)
    both;
  animation: rotate-in-center 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

/**
 * ----------------------------------------
 * animation rotate-in-center
 * ----------------------------------------
 */
@-webkit-keyframes rotate-in-center {
  0% {
    -webkit-transform: rotate(-360deg);
    transform: rotate(-360deg);
    opacity: 0;
  }
  100% {
    -webkit-transform: rotate(0);
    transform: rotate(0);
    opacity: 1;
  }
}
@keyframes rotate-in-center {
  0% {
    -webkit-transform: rotate(-360deg);
    transform: rotate(-360deg);
    opacity: 0;
  }
  100% {
    -webkit-transform: rotate(0);
    transform: rotate(0);
    opacity: 1;
  }
}

.rotate-in-ver {
  -webkit-animation: rotate-in-ver 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94)
    both;
  animation: rotate-in-ver 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}
/**
* ----------------------------------------
* animation rotate-in-ver
* ----------------------------------------
*/
@-webkit-keyframes rotate-in-ver {
  0% {
    -webkit-transform: rotateY(-360deg);
    transform: rotateY(-360deg);
    opacity: 0;
  }
  100% {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    opacity: 1;
  }
}
@keyframes rotate-in-ver {
  0% {
    -webkit-transform: rotateY(-360deg);
    transform: rotateY(-360deg);
    opacity: 0;
  }
  100% {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    opacity: 1;
  }
}

.focus-in-expand {
  -webkit-animation: focus-in-expand 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94)
    both;
  animation: focus-in-expand 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}
/**
 * ----------------------------------------
 * animation focus-in-expand
 * ----------------------------------------
 */
@-webkit-keyframes focus-in-expand {
  0% {
    letter-spacing: -0.5em;
    -webkit-filter: blur(12px);
    filter: blur(12px);
    opacity: 0;
  }
  100% {
    -webkit-filter: blur(0px);
    filter: blur(0px);
    opacity: 1;
  }
}
@keyframes focus-in-expand {
  0% {
    letter-spacing: -0.5em;
    -webkit-filter: blur(12px);
    filter: blur(12px);
    opacity: 0;
  }
  100% {
    -webkit-filter: blur(0px);
    filter: blur(0px);
    opacity: 1;
  }
}
.color-change-2x {
  -webkit-animation: color-change-2x 2s linear infinite alternate both;
  animation: color-change-2x 2s linear infinite alternate both;
}

/**
 * ----------------------------------------
 * animation color-change-2x
 * ----------------------------------------
 */
@-webkit-keyframes color-change-2x {
  0% {
    background: #361154f6;
  }
  100% {
    background: #361154;
  }
}
@keyframes color-change-2x {
  0% {
    background: #361154e5;
  }
  100% {
    background: #361154;
  }
}

@-webkit-keyframes heartbeat {
  from {
    -webkit-transform: scale(1);
    transform: scale(1);
    -webkit-transform-origin: center center;
    transform-origin: center center;
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  10% {
    -webkit-transform: scale(0.91);
    transform: scale(0.91);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  17% {
    -webkit-transform: scale(0.98);
    transform: scale(0.98);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  33% {
    -webkit-transform: scale(0.87);
    transform: scale(0.87);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  45% {
    -webkit-transform: scale(1);
    transform: scale(1);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
}
@keyframes heartbeat {
  from {
    -webkit-transform: scale(1);
    transform: scale(1);
    -webkit-transform-origin: center center;
    transform-origin: center center;
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  10% {
    -webkit-transform: scale(0.91);
    transform: scale(0.91);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  17% {
    -webkit-transform: scale(0.98);
    transform: scale(0.98);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  33% {
    -webkit-transform: scale(0.87);
    transform: scale(0.87);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  45% {
    -webkit-transform: scale(1);
    transform: scale(1);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
}

/**
 * ----------------------------------------
 * animation vibrate-3
 * ----------------------------------------
 */
 @-webkit-keyframes vibrate-3 {
    0% {
      -webkit-transform: translate(0);
              transform: translate(0);
    }
    10% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    20% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    30% {
      -webkit-transform: translate(-2px, 2px);
              transform: translate(-2px, 2px);
    }
    40% {
      -webkit-transform: translate(2px, 2px);
              transform: translate(2px, 2px);
    }
    50% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    60% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    70% {
      -webkit-transform: translate(-2px, 2px);
              transform: translate(-2px, 2px);
    }
    80% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    90% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    100% {
      -webkit-transform: translate(0);
              transform: translate(0);
    }
  }
  @keyframes vibrate-3 {
    0% {
      -webkit-transform: translate(0);
              transform: translate(0);
    }
    10% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    20% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    30% {
      -webkit-transform: translate(-2px, 2px);
              transform: translate(-2px, 2px);
    }
    40% {
      -webkit-transform: translate(2px, 2px);
              transform: translate(2px, 2px);
    }
    50% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    60% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    70% {
      -webkit-transform: translate(-2px, 2px);
              transform: translate(-2px, 2px);
    }
    80% {
      -webkit-transform: translate(-2px, -2px);
              transform: translate(-2px, -2px);
    }
    90% {
      -webkit-transform: translate(2px, -2px);
              transform: translate(2px, -2px);
    }
    100% {
      -webkit-transform: translate(0);
              transform: translate(0);
    }
  }