html,body
{
    height: 100%;
}
body
{
   display: table; 
   margin: 0 auto;
}
.container
{  
    height: 100%;
    display: table-cell;   
    vertical-align: middle;    
}

/* tablet and above */
@media (min-width: 768px){
    .custom-left-column {
        border-right:1px solid #f3f3f3;
        padding-right: 40px;
    }

    .custom-right-column {
        border-left:1px solid #f3f3f3;
        padding-left: 40px;
    }
    .custom-image {
        max-width: 100%;
    }
    .btn-responsive {
        margin-bottom: 10px;
    }

}

/* mobile */
@media (max-width: 767px){
    .custom-left-column {
        margin-top: 10px;
        padding-left: 0px;
        padding-right: 0px;
    }

    .custom-right-column {
        margin-top: 10px;
        padding-left: 0px;
        padding-right: 0px;
        margin-bottom: 20px;
    }
    .custom-image {
        max-height: 135px;
        max-width: 100%;
    }
    h3 {
        margin-top: 10px;
    }
}

h3 {
    color: #00aeef;
}

p {
    color: #676767;
}

.btn-primary {
    background-color: #00aeef !important;
    border-color: #00aeef !important;   
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active, .btn-primary.active, .open>.dropdown-toggle.btn-primary {
    background-color: #0092ef !important;
    border-color: #0092ef !important;
}