.btn {
    display: inline-block;
    font-weight: 400;
    line-height: 1.25;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border: 1px solid transparent;
    padding: .5rem 1rem;
    font-size: 1rem;
    border-radius: .25rem;
    -webkit-transition: all .2s ease-in-out;
    -o-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}
.btn.success{
    color: #ffffff;
    background-image: none;
    background-color: #5cb85c;
    border-color: #5cb85c   
}
.btn.success:hover {
    color: #fff;
    background-color: #a8e461;
    border-color: #5cb85c;
}
.btn.success:disabled,.btn.success:disabled:hover{
    color: #5cb85c;
    background-color: white;
    border-color: #5cb85c;    
}