.contenedor{
    height: 700px;
    /*IMPORTANTE*/
    display: flex;
    justify-content: center;
    align-items: center;
}
#centro-wrapper{
    width: 300px;
    margin-left: auto;
    margin-right: auto;
}
#registro-wrapper{
    width: 300px;
    margin-left: auto;
    margin-right: auto;
}
.logo-login{
    width: 100%;
    margin-bottom: 20px;
}
.divider{
    color: #c0c0c0;
    line-height: 1.2em;
    margin: 30px auto;
    overflow: hidden;
    text-align: center;
    width: 100%;
}
.divider::before, .divider::after {
    border-bottom: 1px solid #eeeeee;
    content: "";
    display: inline-block;
    height: .65em;
    margin: 0 -4px 0 -100%;
    vertical-align: top;
    width: 50%;
}

.divider::after {
    margin: 0 -100% 0 0;
}
:before , :after{
        box-sizing: border-box;
}
.divider i, .divider span, .divider a {
    display: inline-block;
    margin: 0 20px 0 24px;
    font-size: 20px;
}