.head {

  height: 3.75rem;
  background: url(../images/head_bg.png) no-repeat center center;
  background-size: 100% 100%;
  position: relative;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  align-items: center;
  z-index: 1;

}
.fullscreen-btn {
  position: absolute;
  left: 1rem;
  top: 50%;
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.08);
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.125rem;
  cursor: pointer;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  z-index: 10;
  -webkit-transition: color 0.2s;
  transition: color 0.2s;
  padding: 0;
}
.fullscreen-btn:hover {
  color: rgba(255, 255, 255, 0.35);
}
.head h1 {

  color: #e8edf5;
  text-align: center;
  font-size: 1.25rem;
  /* font-size: 1.4rem; */
  line-height: 3.75rem;
  letter-spacing: 0.1875rem;
  font-weight: 500;

}
.head h1 img {

  height: 2.25rem;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
  border-radius: 50%;

}

.mobile-layout .head {
  -webkit-flex-direction: column;
  flex-direction: column;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  align-items: center;
  height: auto;
  padding: 0.75rem 0.9375rem;
}
.mobile-layout .head h1 {
  font-size: 1.5rem;
  letter-spacing: 0;
  line-height: 1.4;
  -webkit-flex: none;
  flex: none;
  text-align: center;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  white-space: normal;
  overflow: visible;
  margin-right: 0;
  margin-bottom: 0.25rem;
}
.mobile-layout .head h1 img {
  height: 2.125rem;
  -webkit-flex-shrink: 0;
  flex-shrink: 0;
  margin-right: 0.5rem;
}
.mobile-layout .fullscreen-btn {
  display: none;
}
.fullscreen-btn svg {
  height: 1.375rem;
  width: 1.375rem;
}