.backimg {
 height: 400px;
 width:  400px;
 margin-bottom: 60px;
 display: block;
 margin-left: auto;
 margin-right: auto;
}
.frm1{
 text-align:center;
 font-weight: bold;
 color: blue;
 margin-left: auto;
 margin-right: auto;
}
.selEmpresa{
 width:50%;
 margin-top: 20px;
 margin-bottom: 100px;
 margin-left: auto;
 margin-right: auto;
}
.center{
 margin-top: 20px;
 margin-bottom: 20px;
 margin-left: auto;
 margin-right: auto;
}
.centerBS{
 margin-top: 20px;
 margin-bottom: 20px;
 margin-left: auto;
 margin-right: auto;
 height: 80px;
 width:  200px;
}
.centerS{
 margin-top: 1px;
 margin-bottom: 1px;
 margin-left: auto;
 margin-right: auto;
}