@media (max-width: 770px) {
    form.login-form div.checkbox button.btn{
        margin-top: 20px;
        margin-bottom: 0;
    }
}

body{
    background-color: #EDEDEC;
}

#logo{
    margin-bottom: 5%;
}

.thumbnail{
    background-color: transparent;
    border-color: transparent;
}
.form-actions { 
    background-color: transparent;
    padding-right: 0px;
    padding-left: 0px;
    margin-bottom: 0px;
}

.login-error {
    margin: 20px auto;
    max-width: 300px;
}

html body div.container div#box div#logo.row ul.thumbnails li{
    list-style-type: none;
}


.thumbnails{
    padding-left: 0;
}

.input-group {
    border-collapse: separate;
    display: table;
    position: relative;
}


form.login-form div.checkbox button.btn{
    margin-bottom:20px;
}

.login-form .form-group div.checkbox label{
    padding-top: 0;
    padding-bottom: 10px;
}

@media (max-width: 767px) {
    form.login-form div.checkbox button.btn{
        margin-top: 20px;
        margin-bottom: 0;
    }
}

body{
    background-color: #EDEDEC;
}

#logo{
    margin-bottom: 5%;
}

.thumbnail{
    background-color: transparent;
    border-color: transparent;
}
.form-actions { 
    background-color: transparent;
    padding-right: 0px;
    padding-left: 0px;
    margin-bottom: 0px;
}

.login-error {
    margin: 20px auto;
    max-width: 300px;
}

html body div.container div#box div#logo.row ul.thumbnails li{
    list-style-type: none;
}


.thumbnails{
    padding-left: 0;
}

.input-group {
    border-collapse: separate;
    display: table;
    position: relative;
}


form.login-form div.checkbox button.btn{
    margin-bottom:20px;
}

.login-form .form-group div.checkbox label{
    padding-top: 0;
    padding-bottom: 10px;
}

Modify a minor css rule
Modify a minor css rule
