body {
  overflow: hidden;
  /*hide scrollbar*/
}

.fill {
  background-size: cover;
  background-position: center;
  width: 100%;
  height: 100%;
}

.box img {
  width: 100%;
  height: 100%;
}

.box3 img {
  object-fit: fill;
}

.center-padding {}

.padding-child {
  padding: 10vh;
  /* margin: 20vh; */
}

.center-screen {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  text-align: center;
  min-height: 100vh;
  position: relative;
  /* pointer-events: none; pass any event through */
}

.center-screen>div {
  /* width: 27%; */
  margin: 10px;
  text-align: center;
  line-height: 100%;
}

.center-tool {
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-content: space-between;
  text-align: center;
  height: 460px;
  position: relative;
  flex-direction: column;
  /* pointer-events: none; pass any event through */
}

.bg-img {
  /* The image used */
  /* background-image: url("../img/city_bw.jpg"); */

  min-height: 380px;

  /* Center and scale the image nicely */
  /* background-position: center;
    background-repeat: no-repeat;
    background-size: cover; */

  /* Needed to position the navbar */
  position: relative;
  /* display: flex;
    flex-direction: column; */
}

.bg-img::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("../img/wp4579436-pure-white-wallpapers.png");
  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  filter: blur(4px) grayscale(0%);
  /* z-index: 0; */
  /* filter: grayscale(100%); */
}

/* Position the navbar container inside the image */
.container {
  position: absolute;
  margin: 20px;
  width: auto;
}

/* The navbar */
.topnav {
  overflow: hidden;
  /* background-color: #333; */
}

/* Navbar links */
.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 16px 16px;
  text-decoration: none;
  font-size: 17px;
}

#logo {
  background-image: url(../img/social-douban.svg);
  /* margin: 8px 2px 2px 6px; */
  /* position: relative; */
  /* display: block; */
  margin: 0 auto;
  /* text-indent: -9999px;
      width: 981px;
      height: 180px; */
}

.button-16 {
  background-color: #ffffff;
  border: 1px solid #000000;
  border-radius: 4px;
  color: #3c4043;
  cursor: pointer;
  /* font-family: arial,sans-serif; */
  font-size: 12px;
  font-weight: normal;
  height: 20px;
  line-height: 20px;
  min-width: 141px;
  padding: 0 2px;
  text-align: left;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  white-space: pre;
}

.button-16:hover {
  border-color: #dadce0;
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
  color: #202124;
}

.button-16:focus {
  border-color: #4285f4;
  outline: none;
}

.hide {
  display: none;
}

.show {
  display: block;
}

body {
  /* background-color: #1E314F; */
  font-family: "Helvetica Rounded", "Arial Rounded MT Bold", "Montserrat", sans-serif;
  /* color: #fff; */
}

.toggleWrapper {
  /* position: absolute; */
  float: right;
  top: 50%;
  left: 50%;
  overflow: hidden;
  margin-top: 20px;
  margin-right: 30px;
  padding: 10 20px;
  transform: translate3d(-50%, -50%, 0);
}
.toggleWrapper input {
  position: absolute;
  left: -50em;
}

.toggle {
  cursor: pointer;
  display: inline-block;
  position: relative;
  width: 45px;
  height: 25px;
  background-color: #83D8FF;
  border-radius: 42px;
  transition: background-color 200ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
}
.toggle:before {
  content: "中文";
  position: absolute;
  left: -25px;
  top: 9px;
  font-size: 9px;
}
.toggle:after {
  content: "EN";
  position: absolute;
  right: -24px;
  top: 8px;
  font-size: 9px;
  color: #749ED7;
}

.toggle__handler {
  display: inline-block;
  position: relative;
  z-index: 1;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background-color: #FFCF96;
  border-radius: 22px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: all 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform: rotate(-45deg);
}
.toggle__handler .crater {
  position: absolute;
  background-color: #E8CDA5;
  opacity: 0;
  transition: opacity 200ms ease-in-out;
  border-radius: 100%;
}
.toggle__handler .crater--1 {
  top: 18px;
  left: 10px;
  width: 4px;
  height: 4px;
}
.toggle__handler .crater--2 {
  top: 28px;
  left: 22px;
  width: 6px;
  height: 6px;
}
.toggle__handler .crater--3 {
  top: 10px;
  left: 25px;
  width: 8px;
  height: 8px;
}

.star {
  position: absolute;
  background-color: #ffffff;
  transition: all 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
  border-radius: 50%;
}

.star--1 {
  top: 10px;
  left: 35px;
  z-index: 0;
  width: 30px;
  height: 3px;
}

.star--2 {
  top: 18px;
  left: 28px;
  z-index: 1;
  width: 30px;
  height: 3px;
}

.star--3 {
  top: 27px;
  left: 40px;
  z-index: 0;
  width: 30px;
  height: 3px;
}

.star--4,
.star--5,
.star--6 {
  opacity: 0;
  transition: all 300ms 0 cubic-bezier(0.445, 0.05, 0.55, 0.95);
}

.star--4 {
  top: 16px;
  left: 11px;
  z-index: 0;
  width: 2px;
  height: 2px;
  transform: translate3d(3px, 0, 0);
}

.star--5 {
  top: 32px;
  left: 17px;
  z-index: 0;
  width: 3px;
  height: 3px;
  transform: translate3d(3px, 0, 0);
}

.star--6 {
  top: 36px;
  left: 28px;
  z-index: 0;
  width: 2px;
  height: 2px;
  transform: translate3d(3px, 0, 0);
}

input:checked + .toggle {
  background-color: #749DD6;
}
input:checked + .toggle:before {
  color: #749ED7;
}
input:checked + .toggle:after {
  color: #ffffff;
}
input:checked + .toggle .toggle__handler {
  background-color: #FFE5B5;
  transform: translate3d(20px, 0, 0) rotate(0);
}
input:checked + .toggle .toggle__handler .crater {
  opacity: 1;
}
input:checked + .toggle .star--1 {
  width: 2px;
  height: 2px;
}
input:checked + .toggle .star--2 {
  width: 4px;
  height: 4px;
  transform: translate3d(-5px, 0, 0);
}
input:checked + .toggle .star--3 {
  width: 2px;
  height: 2px;
  transform: translate3d(-7px, 0, 0);
}
input:checked + .toggle .star--4,
input:checked + .toggle .star--5,
input:checked + .toggle .star--6 {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}
input:checked + .toggle .star--4 {
  transition: all 300ms 200ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
}
input:checked + .toggle .star--5 {
  transition: all 300ms 300ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
}
input:checked + .toggle .star--6 {
  transition: all 300ms 400ms cubic-bezier(0.445, 0.05, 0.55, 0.95);
}