.v-align {
    z-index: 10;
    position:absolute;
    top:70%;
    left:50%;
    -ms-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translate(-50%,-50%);
    transform: translate(-50%,-50%); 
} 

.show {
    position: absolute;
    z-index: 10;
    top: 5%;
}
.v-align {
    z-index: 10;
    position:absolute;
    top:70%;
    left:50%;
    -ms-transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translate(-50%,-50%);
    transform: translate(-50%,-50%); 
} 

.show {
    position: absolute;
    z-index: 10;
    top: 50%;
}
Make login/signup forms centered on page
Make login/signup forms centered on page
