*,
*::after,
::before {
  box-sizing: inherit;
  font-size: 1em;
  padding: 0;
  margin: 0;
}

html {
  box-sizing: border-box;
  height: 100%;
}

body {
  background-color: #eee;
  font-family: Helvetica, serif;
  line-height: 1.2;
  height: 100%;
}

img {
  height: auto;
  max-width: 100%;
}

ul {
  padding-left: 1em;
}

.behind {
  z-index: -1;
}

.block {
  display: block;
}

.cover {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

.flex {
  display: flex;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-center {
  justify-content: center;
}

.flex-justify {
  justify-content: space-between;
}

.flex-top {
  align-items: flex-start;
}

.flex-middle {
  align-items: center;
}

.flex-bottom {
  align-items: flex-end;
}

.fz-300 {
  font-size: 3em;
}

.fz-250 {
  font-size: 2.5em;
}

.fz-200 {
  font-size: 2em;
}

.fz-190 {
  font-size: 1.9em;
}

.fz-180 {
  font-size: 1.8em;
}

.fz-170 {
  font-size: 1.7em;
}

.fz-160 {
  font-size: 1.6em;
}

.fz-150 {
  font-size: 1.5em;
}

.fz-140 {
  font-size: 1.4em;
}

.fz-130 {
  font-size: 1.3em;
}

.fz-120 {
  font-size: 1.2em;
}

.fz-110 {
  font-size: 1.1em;
}

.fz-100 {
  font-size: 1em;
}

.fz-90 {
  font-size: 0.9em;
}

.fz-80 {
  font-size: 0.8em;
}

.fz-70 {
  font-size: 0.7em;
}

.grow-0 {
  flex: 0;
}

.grow, .grow-1 {
  flex: 1;
}

.grow-2 {
  flex: 2;
}

.grow-3 {
  flex: 3;
}

.grow-4 {
  flex: 4;
}

.hw-100 {
  height: 100%;
  width: 100%;
}

.p-1 {
  padding: 0.5em;
}

.p-2 {
  padding: 1em;
}

.m-1 {
  margin: 0.5em;
}

.m-2 {
  margin: 1em;
}

.m-3 {
  margin: 1.5em;
}

.mt-1 {
  margin-top: 0.5em;
}

.mt-2 {
  margin-top: 1em;
}

.mt-3 {
  margin-top: 1.5em;
}

.mb-1 {
  margin-bottom: 0.5em;
}

.mb-2 {
  margin-bottom: 1em;
}

.mb-3 {
  margin-bottom: 1.5em;
}

.ml-1 {
  margin-left: 0.5em;
}

.ml-2 {
  margin-left: 1em;
}

.ml-3 {
  margin-left: 1.5em;
}

.mr-1 {
  margin-right: 0.5em;
}

.mr-2 {
  margin-right: 1em;
}

.mr-3 {
  margin-right: 1.5em;
}

.pointer {
  cursor: pointer;
}

.relative {
  position: relative;
}

.text-center {
  text-align: center;
}

.w-100 {
  width: 100%;
}

.w-75 {
  width: 75%;
}

.w-66 {
  width: 66.67%;
}

.w-50 {
  width: 50%;
}

.w-33 {
  width: 33.33%;
}

.w-25 {
  width: 25%;
}

.mxw-300 {
  max-width: 300px;
}

@-webkit-keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  border-radius: 50%;
  border: 0.1em solid #aaa;
  border-top-color: #222;
  height: 1em;
  width: 1em;
  -webkit-animation: spin 1s infinite linear;
          animation: spin 1s infinite linear;
}