* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}


div {
    box-sizing: border-box;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: normal;
}

ul,
ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

html,
body {
    width: 100%;
    min-width: 375px;
    min-height: 100vh;
}

.bg {
    min-height: 100vh;
    width: 100%;
    height: 100vh;
    background: #000;
    background-size: cover;
    position: relative;
    background: url(../img/web_bg.png);
    background-size: cover;
    overflow: auto;
}

.w {
    position: absolute;
    top: 0;
    left: 50%;
    width: 100%;
    transform: translate(-50%, 0);
    max-width: 1200px;
}


header {
    margin-top: 90px;
    position: relative;
    height: 120px;
    overflow: hidden;
}

.logo {
    position: absolute;
    /* top: 50%; */
    left: 0;
    /* transform: translate(0, 0); */
    width: 421px;
    overflow: hidden;
    cursor: pointer;
}


.nav {
    position: absolute;
    right: 30px;
    /* top: 50%; */
    /* transform: translate(0, 0); */
    float: right;
    cursor: pointer;
    overflow: hidden;
}

.nav>a {
    padding-left: 30px;
    float: right;
    font-size: 24px;
    line-height: 108px;
}

.text{
    margin-top: 340px;
}
.btn{
    margin-top: 60px;
}
.btn img{
    margin-right: 50px;
}
.left{
    width: 50%;
    float: left;
}
.right{
    width:50%;
    float: right;
}
.right img{
    margin-top: 80px;
    width: 100%;
}

p{
    margin: 10px 0;
}
h3{
    margin: 100px 0 30px 0;
    font-size: 30px;
    font-weight: 700;
}
h4{
    margin: 20px 0;
    font-size: 20px;
}

.username,
.email {
    margin-left: 15px;
    box-sizing: border-box;
    width: calc(50% - 30px);
    height: 90px;
    background: rgba(255, 255, 255, 0.1);
    /* border-radius: 10px; */
    float: left;
    min-width: 300px;
    text-align: left;
    line-height: 90px;
    vertical-align: middle;
    border-bottom: 1px solid black;
}
.email{
    float: right;
    margin-right:15px;
}

.username img,
.email img {
    margin-left: 30px;
    width: 40px;
    height: 40px;
    vertical-align: middle;
}
.username input,
.email input {
    margin-left: 20px;
    width: calc(100% - 100px);
    height: 70px;
    -webkit-appearance: none;
    -moz-appearance: none;
    vertical-align: middle;
    border: none;
    outline: none;
    background: #fff;
    font-size: 20px;
}

.textarea textarea {
    margin:20px 15px;
    width: calc(100% - 30px);
    border-radius: 8px;
    background: #fff;
    outline: none;
    border: 1px solid #979797;
    font-size: 20px;
    height: 260px;
}

.submit-btn {
    float: left;
    margin: 30px 15px;
    width: 270px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    text-align: center;
    line-height: 80px;
    font-size: 26px;
    color: #fff;
    background-color: #e4e4e4;
}

.cover {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    /* border-radius: 30px; */
    /* background: rgba(255, 255, 255); */
    background: #fff;
    z-index: 999;
    display: none;   

    
    color: #000;
    text-align: center;
}
.cover img{
    position: absolute;
    left: 50%;
    top: 30%;
    transform: translate(-50%,0);
    width: 150px;
}
.success-text{
    font-size: 16px;
    position: absolute;
    bottom: 40%;
    left: 50%;
    transform: translate(-50%,0);
    color: #8F8882;
}
.success-text span{
    font-size: 20px;
    margin-bottom: 10px;
    display: block;
    color: #000;
}


@media screen and (max-width: 1250px) {
    header{
        margin-top: 20px;
    }
    .logo{
        margin-left: 20px;
        width: 108px;
    }
    h3{
        margin-top: 20px;
    }
}

@media screen and (max-width: 1100px) {
    header{
        margin-top: 20px;
    }
    .logo{
        margin-left: 20px;
        width: 108px;
    }
    h3{
        margin-top: 20px;
    }
}
@media screen and (max-width: 850px) {
    .username,
    .email {
        margin-left: 15px;
        width: calc(100% - 30px);
      
    }

}

@media screen and (max-width: 800px) {
  
    .nav>a{
        padding-left: 30px;
        float: right;
        font-size: 18px;
        line-height: 108px;
    }
}
@media screen and (max-width: 600px) {
  
    .nav>a{
        padding-left: 10px;
        float: right;
        font-size: 14px;
        line-height: 108px;
    }
}

/* @media screen and (max-width: 520px) {
    .currentNav{
        display: none;
    }
} */