body{
    background: #f8f8f8;
}
*{
    margin: 0;
    padding: 0;
}
.clear{ clear:both; } 
.left{ float: left; }
.right{ float: right; }
a{
    text-decoration: none;
    color: #333333;
}
.flex-center-center{
    display: flex;
    justify-content: center;
    align-items: center;
}
.flex-center-start{
    display: flex;
    justify-content: center;
    align-items: flex-start;
}
.flex-between-center{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.flex-between-start{
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.flex-start-center{
    display: flex;
    justify-content: flex-start;
    align-items: center;
}
.flex-start-start{
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
}
.flex-end-center{
    display: flex;
    justify-content: flex-end;
    align-items: center;
}
.header-all{
    width: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid #eeeeee;
    padding: 16px 0;
}
.header-content-all{
    width: 1200px;
    margin: 0 auto;
}
.header-logo{
    height: 48px;
    width: 120px;
    background: #eeeeee;
}
.header-nav-all{
    margin-left: 100px;
}
.header-nav{
    color: #777777;
    margin-right: 72px;
    font-size: 14px;
    transition: .2s ease-in-out;
}
.header-nav-on{
    color: #fff;
    background-color: #282a31;
    border-radius: 4px;
    padding: 4px 8px;
    margin-right: 72px;
    font-size: 14px;
    transition: .2s ease-in-out;
}
.header-nav:hover{
    color: #282a31;
}
.login-block{
    margin-left: 100px;
}
.phone-header-btn{
    display: none;
    margin-left: 200px;
    flex-direction: column;
}
.phone-header-icon-line{
    height: 3px;
    width: 24px;
    margin-bottom: 6px;
    background-color: #282a31;
}
.phone-header-content-all{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #ffffff;
    width: 100%;
    height: 100%;
    z-index: 999;
}
.phone-header-content{
    flex-direction: column;
    height: 80%;
}
.phone-header-content-single{
    margin-bottom: 48px;
    color: #282a31;
    font-size: 14px;
    padding: 12px 0;
}
.phone-header-content-single-on{
    border-bottom: 1px solid #282a3146;
}
.phone-header-icon-line:last-child{
    margin-bottom: 0;
}
.login-btn{
    background-color: #282a31;
    border-radius: 4px;
    color: #ffffff;
    font-size: 12px;
    padding: 8px 16px;
    margin-right: 12px;
    transition: .2s ease-in-out;
}
.login-btn:hover{
    background-color: #515255;
}
.register-btn{
    border: 1px solid #282a31;
    border-radius: 4px;
    color: #282a31;
    font-size: 12px;
    padding: 8px 16px;
    transition: .2s ease-in-out;
}
.register-btn:hover{
    background-color: rgba(40, 42, 49, 0.12);
}
.footer-all{
    width: 100%;
    background-color: #282a31;
    padding: 32px 0;
}
.footer-content-all{
    width: 1200px;
    margin: 0 auto;
}
.footer-content-text{
    color: #aaaaaa;
    font-size: 12px;
}
@media screen and (max-width: 640px){
    .header-content-all{
        width: 100%;
    }
    .header-nav-all{
        display: none;
    }
    .login-block{
        display: none;
    }
    .phone-header-btn{
        display: flex;
    }
    .footer-content-all{
        width: 90%;
    }
}
@media screen and (max-width: 360px){
    .header-content-all{
        width: 360px;
    }
    .header-nav-all{
        display: none;
    }
    .login-block{
        display: none;
    }
    .phone-header-btn{
        display: flex;
    }
    .footer-content-all{
        width: 90%;
    }
}
.mianbaoxie{
    margin-bottom: 12px;font-size: 14px;margin-left:15px;
}
.main-list-single-content h3{font-size: 18px;}
.main-list-single-content p{
    color: #777;
    margin-top:5px; 
    font-size: 14px;
}