*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
.menu{
    position: fixed;
    background-color: black;
    height: 80px;
    width: 1800px;
}
.menu img{
    float: left;
    width: 5%;
}
img{
    padding-top: 0px;
    margin-left: 100px;
}
.menu-left{
    margin-left: 550px;
}
.menu .menu-left a{
    text-decoration: none;
}
.menu-left a{
    float: left;
    padding: 10px;
    margin-top: 15px;
    color: white;
    font-size: 20px;
}
.login{
    float: right;
    padding-top: 15px;
    padding-right: 35px;
}
.login button{
    background-color:rgb(245, 7, 7);
    width: 85px;
    height:40px;
    border-radius: 13px;
    margin-right: 20px;
    border: 2px white;
}
.login > .dk{
    background-color:rgba(70, 78, 80, 0.89);
} 
button a{
    text-decoration: none;
    color: white;
}
.gioithieu{
    padding-top: 150px;
    text-align: center;
    color: white;
    font-size: 25px;
}
.nen{
    background-color: #10141b;
    height: 1500px;
}
.nut5{
 padding-top: 20px;
 text-align: center;
}
.nut5  .hai{
    width: 250px;
    height: 50px;
 border-radius: 50px;
 margin: 10px;
 color: white;
 background-color: #10141b;
 border: 1px solid white;
}
.nut5 button{
    width: 150px;
    height: 50px;
 border-radius: 50px;
 margin: 10px;
 color: white;
 background-color: #10141b;
 border: 1px solid white;
}
.noidung{
    width:1300px;
    margin: 0 auto;
    margin-top: 60px;
    color: white;
    font-size: 20px;
}
.bonanh{
    padding-top: 60px;
    padding-right: 100px;
    height: 400px;
    width: 100%;
}
.ah1{
    text-align: center;
}
.ah1 img{
    height: 100%;
}
.footer{
    background-color: black;
    height: 600px;
    text-align: center;
    padding-top: 25px;
}
.vmenu a{
    text-decoration: none;
    color: white;
    margin: 0px 20px;
    font-size: 20px;

}
.icon{
    display: flex;
    padding-left: 500px;
    padding-top: 30px;
}
.trai{
    display: flex;
    padding-top: 15px;
}
.phai{
    display: flex;
    padding-left: 15px;
}
.trai .f{
    margin-left: 20px;
}
.phai .g{
    margin-left: 40px;
    width: 150px;
}
.chuu{
    padding-top: 45px;
    padding-left: 30px;
}
.chuu h4{
    color: white;
}
.menu-left a:hover{
    color: red;
}