:root {
  --main-color: #de335e;
  --text-color: #606266;
}
*,
body,
h3 {
  margin: 0;
  padding: 0;
}
.container {
  font-family: cursive;
  font-size: 14px;
  line-height: 1;
}
.container .head {
    width: 100%;
    height: 60px;
    display: flex;
    justify-content: flex-end;
    font-size: 18px;
}
.container .head div {
      width: 60%;
      margin: auto;
      height: 100%;
      display: flex;
      align-items: center;
}
.container .head span,
    .container .head a {
      margin: 0 20px;
      display: inline-block;
      position: relative;
      cursor: pointer;
}
.container .head span.active {
      color: var(--main-color);
}
.container .head span.active::after {
      position: absolute;
      bottom: -24px;
      right: 0;
      height: 4px;
      width: 100%;
      background: var(--main-color);
      content: '';
}
.container .head::after {
    box-shadow: 0 2px 3px 0 rgba(0, 0, 0, 0.07);
    display: block;
    position: absolute;
    top: 60px;
    color: rgba(0, 0, 0, 0.07);
    content: '';
    width: 100%;
    height: 2px;
}
.container .help {
    margin: 5vh auto;
    width: 90vw;
}
.container .help h3 {
      color: var(--main-color);
      text-align: center;
      margin-bottom: 10px;
}
.container .help .content {
      display: flex;
      justify-content: space-between;
}
.container .help .content .card video {
        width: 29vw;
}
.container .help .last {
      margin: auto;
      width: 50vw;
}
.container .help .last video {
        width: 100%;
}
.container h1 {
    color: var(--main-color);
    font-weight: bold;
    font-size: 35px;
    text-align: center;
    margin-bottom: 50px;
}
.container header {
    margin: 5vh auto;
    width: 60%;
}
.container header h3 {
      font-weight: bold;
      font-size: 25px;
      font-size: 19px;
      margin-top: 10px;
}
.container header h3 span {
        font-size: 20px;
        margin-right: 3px;
        display: inline-block;
}
.container header .top-50 {
      margin-top: 50px;
}
.container header strong {
      display: inline-block;
      margin: 0 2px;
      color: var(--main-color);
}
.container header p {
      margin: 5px auto;
      line-height: 1.8;
}
.container header p.bottom-30 {
      margin-bottom: 30px;
}
.container header .big {
      display: inline-block;
      margin-top: 10px;
      font-size: 30px;
      color: var(--main-color);
}
.container header .upload {
      width: 70px;
      height: 70px;
      position: relative;
      box-shadow: 0 0 5px #eee;
      box-sizing: border-box;
      padding: 10px;
      margin: auto;
}
.container header .upload svg {
        position: absolute;
        top: 0;
        left: 0;
        width: 70px;
        height: 70px;
        box-sizing: border-box;
}
.container header .upload input {
        width: 70px;
        height: 70px;
        opacity: 0;
        z-index: 10;
        position: absolute;
        top: 0;
        left: 0;
}
.container section {
    width: 100%;
    position: relative;
    background: black;
    mix-blend-mode: color-burn;
}
.container section .preview {
      width: 100%;
      display: none;
}
.container section .cover {
      position: absolute;
      left: 0;
      top: 0;
      background: black;
      width: 100%;
      height: 100%;
      mix-blend-mode: color-burn;
}
.container a {
    text-decoration: none;
    color: inherit;
}

