* {
  margin: 0;
  padding: 0;
}

html {
  --width: 100%;
  --height: 100%;
}
html, body, .body {
  width: var(--width);
  height: var(--height);
}


.body {
  display: flex;
  overflow: hidden;
}

#cad {
  flex: 1;
  background-color: #000;
}

.variable {
  cursor: pointer;
}
.content {
  /* position: absolute;
  right: 0;
  top: 0;
  bottom: 0; */
  background-color: #fff;
}

i {
  display: inline-block;
  width: 50px;
  height: 50px;
  border: 1px solid red;
}

.chose li {
  text-align: center;
}

.btn {
  display: inline-block;
  width: 45%;
  height: 30px;
  border-radius: 5px;
  background-color: #181c1d;
  color: #fff;
  text-align: center;
  cursor: pointer;
  line-height: 30px;
}