study_sm/src/containers/sign/index.css

.sign-body {
    background: url("/static/sign/bg.jpg") no-repeat fixed bottom;
    background-size: 100% auto;
    background-color:#4eaceb;
    margin:0;
    font-family:"Arial";
    padding-bottom: 20px;
}
@media screen and  (min-width: 640px){
    .sign-body {
        font-size: 85.4px;
    }
}

@media screen and  (min-width: 414px) and (max-width: 639px){
    .sign-body {
        font-size: 55.2px;
    }
}

@media screen and (min-width:375px) and (max-width:413px){
    .sign-body {
        font-size: 50px;
    }
}

@media screen and (min-width:320px) and (max-width:374px){
    .sign-body {
        font-size: 42.7px;
    }
}

.sign-title-2{
  width: 100%;
  font-size: 28px;
  text-align: center;
  /* margin: 30px auto; */
  color: white;
  padding-top: 30px;
  padding-bottom: 30px;
  display: block;
  font-weight: bold;
}

.sign-content-box {
    width: 80%;
    background-color: white;
    border-radius: .6rem;
    margin-left: auto;
    margin-right: auto;
    padding: .9rem;
    margin-bottom: 1.2rem;
}

.sign-title {
    font-weight: bold;
    font-size: 20px;
    color: #439fff;
}

.sign-content {
    width: 100%;
    margin-top: .6rem;
    border-top: 1px solid #e6e6e6;
}

.sign-course-name {
    font-size: 1.1rem;
    font-weight: bold;
    color: #333;
    margin-top: .6rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    margin-bottom: -0.3rem;
}

.sign-ul-info {
    font-size: .9rem;
    margin-top: .6rem;
    color: #333;
}

.sign-info {
    margin-top: .15rem;
}

.sign-info-2 {
    width: 40%;
    float: left;
}
.sign-info-3 {
    width: 60%;
    float: left;
}

.sign-con {
    font-size: .72rem;
}

.sign-tips {
    margin-left: auto;
    margin-right: auto;
    font-size: .72rem;
    font-weight: bold;
    color: white;
    width: 80%;
    margin-bottom: 1.2rem;
}