.hedder_a {
width: 100%;
height: 5%;
position: relative;
background-color: #85b9e9;
}

.left_a {
width: 50%;
height: 90%;
float: left;
position: relative;
}

.right_a {
width: 48%;
height: 90%;
float: right;
position: relative;
/*background-color: #11b9e9*/
}


.futter_a {
width: 100%;
height: 5%;
clear: left;
/* bottom: 0%; */
/* position:absolute; top:95%; */
background-color: #85b9e9;
}