#webid{
margin:0 auto;
text-align:center;
background:red;
font-size:15px;
background-image: url('images/water.jpg');
}

.exer{
color:white;
font-size:40px;
background:gray;
}

.moh{
color:red;
font-size:20px;
}

.info{ 
color:white;
font-size:40px;
background:gray;
}

.have{
color:yallow;
font-size:20;
}