*{
    box-sizing:border-box;
    -moz-box-sizing:border-box;
    -webkit-box-sizing:border-box
}
html, body{
    width:100%;
    margin:0;
    padding:0;
    background-color:rgb(28 16 5);
    font-family:Helvetica
}
.container{
    text-align:center;
    background-image: url("https://70303d714.vws.vegacdn.vn/cakhiastatic/weblanding/bgpc1.jpg");
    background-repeat:no-repeat;
    background-size:cover;
    background-size: 100% 100%;
}
.form{
    width:100%;
    padding:100px 5%
}
#desktop{
    display:flex;
    margin-left: 18%;
}
#desktop>a{
    width: 30%;
    margin: 0 5%;
}
#mobile{
    display:none
}
.content_title{
    text-align:center;
}
.content_title h1{
    color:orange;
    font-weight:700;
    letter-spacing:3px
}
.content_title img{
    max-width: 500px;
    height: auto;
}
.box{
    position:relative;
    -ms-flex:1;
    flex:1;
    padding:0 7px;
    width:100%;
    transition:transform .2s
}
.button_style{
    letter-spacing:2px;
    transition-duration:.4s;
    font-size:1.2vw;
    font-weight:700;
    text-transform:uppercase;
    color:#fff;
    text-align:center;
    border:none;
    background-color:orange;
    margin:0 auto;
    bottom:6vh;
    width:66%;
    height:50px;
    position:absolute;
    left:17%;
    border-radius: 5px;
}
.layout-4columns{
    margin:30px 0;
    display:flex;
    text-align:center;
    -ms-flex-direction:row;
    flex-direction:row
}
.box:hover{
    cursor:pointer;
    -ms-transform:scale(1.05);
    -webkit-transform:scale(1.05);
    transform:scale(1.05)
}
.box>img{
    width:100%;
    box-shadow:5px 5px 20px #000;
    height: 50%;
    border-radius: 10px;
    /* height: 100px; */
}
.button_style.ck{
    background-color:rgb(10, 233, 48);
}
.button_style.ck.rk{
    background-color:red;
}
.box:hover .button_style{
    cursor:pointer;
    background-color:red
}
.box:hover .button_style.ytb{
    background-color:rgb(10, 233, 48);
}
.box:hover .button_style.ck{
    background-color:orange;
}
.blv{
 color: #fff;
 font-size: 40px;
 font-weight: 700;
 line-height: 1.5;
}
@keyframes colorbutton {
    from {background-color: red;}
    to {background-color: rgb(233 121 10);}
  }
@media only screen and (max-width:1024px){
    .content_title img{
        max-width: 300px;
        height: auto;
    }
    .blv{
        color: #fff;
        font-size: 25px;
        font-weight: 700;
    }
    #desktop{
        display:none
    }
    #mobile{
        display:block
    }
    .layout-4columns{
        margin:30px 0;
        display:flex;
        text-align:center;
        -ms-flex-direction:column;
        flex-direction:column
    }
    .form{
        padding:90px 10%
    }
    .box{
        padding:0;
        margin:0 0 20px
    }
    .button_style.fb{
        height:35px;
        width:70%;
        left:0%;
        right:-27%;
        font-size:17px;
        bottom:5vh;
    }
    .button_style.ck{
        background-color:rgb(10, 233, 48);
        height: 35px;
        width: 80%;
        left: 0%;
        right: 0;
        font-size: 20px;
        bottom: 3vh;
    }
    .button_style.ck.rk{
        background-color:red;
    }
    .container{
        text-align:center;
        background-image: url("https://70303d714.vws.vegacdn.vn/cakhiastatic/weblanding/bgmb1.jpg");
        background-repeat:no-repeat;
        background-size:cover;
        background-size: 100% 100%;
    }
}