header h1 {
    display: none;
}

.main {
    position: absolute;
    width: 100vw;
    height: 100vh;
    perspective: 1000px;
    -webkit-perspective: 1000px; /* Safari and Chrome */
    transform-style: preserve-3d;
    transform-origin: 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 背景 */
.main-background {
    list-style: none;
    position: absolute;
    overflow: hidden;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: calc(100vh + 750px);
    z-index: 0;
    background-image: linear-gradient(to top, #cfd9df 10%, #74b9ff 90%);
}
.main-background li {
    width: 40px;
    height: 40px;
    border-radius: 5px;
    background-color: rgba(9,132,227,0.15);
    position: absolute;
    bottom: -160px;
}


/* 登陆卡片 */
.main-registerCard {
    /* css定义变量的方式 */
    --X: 0;
    --Y: 0;
    position: relative;
    width: 750px;
    height: 500px;
    background-color: white;
    border-radius: 20px;
    transform-style: preserve-3d;
    box-shadow: 0 5px 30px rgba(0,0,0,0.5);
    transform: rotateX(var(--X)) rotateY(var(--Y)) translateZ(50px);
    transition: 0.1s ease;
    overflow: hidden;
}

.main-registerCard-close { /* 关闭按钮 */
    height: 20px;
    width: 20px;
    background-color: #ff7675;
    border-radius: 10px;
    left: 20px;
    top: 20px;
    position: absolute;
}
.main-registerCard-close-hoverImg {
    height: 14px;
    width: 14px;
    position: absolute;
    left: 3px;
    top: 3px;
    display: none;
    cursor: pointer;
}

/* 上进度条 */
.main-registerCard-progressLine {
    height: 60px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 50px;
}
.main-registerCard-progressLine-point {
    height: 20px;
    width: 20px;
    margin-right: 5px;
    margin-left: 5px;
    border-radius: 10px;
    border: 1px solid #b2bec3;
}
.main-registerCard-progressLine-point-icon {
    height: 12px;
    width: 12px;
    margin: 3px;
    display: none;
}
.main-registerCard-progressLine-line {
    height: 1px;
    width: 27%;
    background-color: #b2bec3;
}

.focus {
    border: 1px solid #0984e3;
    background-color: #0984e3;
}


/* 下内容区 */
.main-registerCard-content {
    position: relative;
    height: calc(100% - 110px);
    width: 100%;
    padding-top: 10px;
    padding-left: 30px;
    padding-right: 30px;
    padding-bottom: 30px;
}

/* 邮箱验证 */
.main-registerCard-content-mail {
    position: absolute;
    width: calc(100% - 60px);
    height: calc(100% - 40px);
    display: flex;
    justify-content: center;
    align-items: center;
}
.main-registerCard-content-mail-welcome {
    font-size: 32px;
    color: #636e72;
}
.main-registerCard-content-mail-input {
    display: none;
    text-align: center;
}
.main-registerCard-content-mail-input-conversationOne {
    font-size: 28px;
    line-height: 50px;
    color: #636e72;
    transition: 0.6s ease;   
}
.main-registerCard-content-mail-input-conversationTwo {
    font-size: 18px;
    line-height: 40px;
    color: #636e72;
    transition: 0.6s ease;   
}
.main-registerCard-content-mail-input-emailBox {
    width: 300px;
    height: 80px;
    margin-top: 20px;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.main-registerCard-content-mail-input-emailBox-input {
    width: 300px;
    height: 50px;
    border: 1px solid #636e72;
    border-radius: 20px;
    line-height: 50px;
    font-size: 20px;
    padding-left: 20px;
    padding-right: 50px;
}
.main-registerCard-content-mail-input-emailBox-button {
    position: absolute;
    height: 50px;
    width: 50px;
    background-color: #636e72;
    border-radius: 20px;
    border-top-left-radius: 0px;
    border-bottom-left-radius: 0px;
    transform: translateX(130px);
    transition: 0.6s ease;
}
.main-registerCard-content-mail-input-emailBox-button-icon {
    height: 30px;
    width: 30px;
    margin: 10px;
}
.main-registerCard-content-mail-input-prompt {
    height: 30px;
    line-height: 20px;
    font-size: 14px;
    color: #ff7675;
}

/* 密码设置 */
.main-registerCard-content-password {
    position: absolute;
    width: calc(100% - 60px);
    height: calc(100% - 40px);
    display: flex;
    justify-content: center;
    align-items: center;
    display: none;
    flex-direction: column;
}
.main-registerCard-content-password-welcomeOne {
    font-size: 32px;
    color: #636e72;
}
.main-registerCard-content-password-welcomeTwo {
    margin-top: 10px;
    line-height: 30px;
    font-size: 24px;
    color: #636e72;
}
.main-registerCard-content-password-welcomeThree {
    margin-top: 40px;
    margin-bottom: 10px;
    font-size: 18px;
    color: #636e72;
    display: none;
}
.main-registerCard-content-password-inputBox {
    width: 300px;
    height: 80px;
    margin-top: 20px;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    display: none;
}
.main-registerCard-content-password-inputBox-input {
    width: 300px;
    height: 50px;
    border: 1px solid #636e72;
    border-radius: 20px;
    line-height: 50px;
    font-size: 20px;
    padding-left: 20px;
    padding-right: 50px;
}
.main-registerCard-content-password-inputBox-prompt {
    font-size: 14px;
    color: #ff7675;
    margin-top: 10px;
    text-align: center;
}
.main-registerCard-content-password-inputBox-button {
    position: absolute;
    height: 50px;
    width: 50px;
    background-color: #636e72;
    border-radius: 20px;
    border-top-left-radius: 0px;
    border-bottom-left-radius: 0px;
    transform: translate(250px, -50px);
    transition: 0.6s ease;
}
.main-registerCard-content-password-inputBox-button-icon {
    height: 30px;
    width: 30px;
    margin: 10px;
}

/* 邮箱激活 */
.main-registerCard-content-activation {
    position: absolute;
    width: calc(100% - 60px);
    height: calc(100% - 40px);
    display: flex;
    justify-content: center;
    align-items: center;
    display: none;
    flex-direction: column;
}
.main-registerCard-content-activation-icon {
    height: 90px;
    width: 90px;
    margin-top: 20px;
    margin-bottom: 20px;
}
.main-registerCard-content-activation-title {
    font-size: 24px;
    line-height: 40px;
    text-align: center;
    font-weight: 500;
    color: #00b894;
    margin-bottom: 40px;
}
.main-registerCard-content-activation-prompt1,
.main-registerCard-content-activation-prompt2 {
    height: 30px;
    font-size: 16px;
    color: #636e72;
    text-align: center;
}
.main-registerCard-content-activation-prompt1 {
    color: #ff7675;
}