.sociallogin-form-admin .fieldset {
    border: 1px groove #fff !important;
    padding: 0 1.4em 1.4em 1.4em !important;
    margin: 0 0 1.5em 0 !important;
    -webkit-box-shadow:  0px 0px 0px 0px #000;
            box-shadow:  0px 0px 0px 0px #000;
}
.sociallogin-form-admin legend {

    width: initial; 
    padding: 0;
    padding-left: 10px;
    padding-right: 10px;
    border-bottom: 1px solid #fff;       
}