#bottomfoot{
    width: 100%;
    text-align: center;

}
#topfoot{
    background-image: -webkit-linear-gradient(top, #5cb85c 0%, #419641 100%);
    background-image:      -o-linear-gradient(top, #5cb85c 0%, #419641 100%);
    background-image: -webkit-gradient(linear, left top, left bottom, from(#5cb85c), to(#419641));
    background-image:         linear-gradient(to bottom, #5cb85c 0%, #419641 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5cb85c', endColorstr='#ff419641', GradientType=0);
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
    background-repeat: repeat-x;
    border-color: #3e8f3e;
    height: 50px;
}

@media screen and (min-width: 1025px) {

    .tieude2 > h4{
        font-size: 20px;
    }
}
/*Ipad ngang(1024 x 768)*/
@media screen and (max-width: 1024px){

    .tieude2 > h4{
        font-size: 20px;
    }
}
/*Ipad dọc(768 x 1024)*/

@media screen and (max-width: 768px){

    .tieude2 > h4{
        font-size: 20px;
    }
/*Tablet nhỏ(480 x 640)*/
@media screen and (max-width: 480px){

    .tieude2 > h4{
        font-size: 18px;
    }
}

/*Smart phone nhỏ*/
@media screen and (max-width: 320px){
    .tieude2 > h4{
        font-size: 13px;
    }
}