/* helpers/align.css */

.align {
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

/* helpers/animation.css */

.animation {
  -webkit-animation-duration: 0.6s;
          animation-duration: 0.6s;
  -webkit-animation-fill-mode: both;
          animation-fill-mode: both;
}

.animation--reverse {
  animation-direction: reverse;
}

/* helpers/animation-shake.css */

@-webkit-keyframes shake-vertical {

  15%,
  45%,
  75% {
    -webkit-transform: translateY(-0.75rem);
            transform: translateY(-0.75rem);
  }

  30%,
  60% {
    -webkit-transform: translateY(0.75rem);
            transform: translateY(0.75rem);
  }

}

@keyframes shake-vertical {

  15%,
  45%,
  75% {
    -webkit-transform: translateY(-0.75rem);
            transform: translateY(-0.75rem);
  }

  30%,
  60% {
    -webkit-transform: translateY(0.75rem);
            transform: translateY(0.75rem);
  }

}

.animation--shake--vertical {
  -webkit-animation-name: shake-vertical;
          animation-name: shake-vertical;
  will-change: transform;
}

:root {
  --grid-max-width: 40rem;
  --grid-width: 90%;
  --grid-gutter: 3%;
}

.grid {
  margin-left: auto;
  margin-right: auto;
  max-width: 40rem;
  max-width: var(--grid-max-width);
  width: 90%;
  width: var(--grid-width);
}

.grid__row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  margin: calc(3% / -2);
  margin: calc(var(--grid-gutter) / -2);
}

.grid__col {
  margin: calc(3% / 2);
  margin: calc(var(--grid-gutter) / 2);
  -webkit-box-flex: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}

/* layout/base.css */

:root {
  --html-font-size: 100%;

  --body-background-color: #f9f8f5;
  --body-color: #353535;
  --body-font-family: 'Roboto';
  --body-font-family-fallback: sans-serif;
  --body-font-size: 1rem;
  --body-font-weight: 400;
  --body-line-height: 1.5;
}

*,
*::before,
*::after {
  -webkit-box-sizing: inherit;
          box-sizing: inherit;
}

html {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-size: 100%;
  font-size: var(--html-font-size);
  height: 100%;
}

body {
  background-color: #f9f8f5;
  background-color: var(--body-background-color);
  color: #353535;
  color: var(--body-color);
  font-family: 'Roboto', sans-serif;
  font-family: var(--body-font-family), var(--body-font-family-fallback);
  font-size: 1rem;
  font-size: var(--body-font-size);
  font-weight: 400;
  font-weight: var(--body-font-weight);
  line-height: 1.5;
  line-height: var(--body-line-height);
  margin: 0;
  min-height: 100%;
}

/* modules/box.css */

:root {
  --box-background-color: #fff;
  --box-padding-horizontal: 2rem;
  --box-padding-vertical: 3rem;
}

.box {
  background-color: #fff;
  background-color: var(--box-background-color);
  -webkit-box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.3);
          box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.3);
  font-size: 6.25rem;
  padding-bottom: 3rem;
  padding-bottom: var(--box-padding-vertical);
  padding-left: 2rem;
  padding-left: var(--box-padding-horizontal);
  padding-right: 2rem;
  padding-right: var(--box-padding-horizontal);
  padding-top: 3rem;
  padding-top: var(--box-padding-vertical);
  text-align: center;
}

.logito{
  margin: 5px;
  padding: 3px;
  width: 15%;
}
.contener{
  margin-top: 5px;
  text-align: center;
}

.btnregresar {
  box-shadow: 0.3em 0.3em 0 0 var(--color), inset 0.3em 0.3em 0 0 var(--color);
}
.btnregresar:hover, .btnregresar:focus {
  box-shadow: 0 0 0 0 var(--hover), inset 6em 3.5em 0 0 var(--hover);
}

.btnregresar {
  --color: #0e3bce;
  --hover: #1973bc;
}

button {
  color: var(--color);
  transition: 0.25s;
}
button:hover, button:focus {
  border-color: var(--hover);
  color: #fff;
}

button {
  background: none;
  border: 2px solid;
  font: inherit;
  line-height: 1;
  margin: 0.5em;
  padding: 1em 2em;
}