fronend/scss/_buttons.scss

.btn {
    &:focus {
        outline: none !important;
    }
}

.btn-circle {
    border: none;
    outline: none !important;
    overflow: hidden;
    width: 40px;
    height: 40px;
    @include border-radius(50%);

    i {
        font-size: 18px;
        position: relative;
        left: -1px;
    }
}

.btn-link {
    font-weight: bold;
    color: #333;
    @include transition(.5s);

    &:active,
    &:focus {
        text-decoration: none;
        color: #333;
    }

    &:hover {
        text-decoration: none;
        color: #333;
        background-color: #ddd;
    }
}

.btn-circle-lg {
    border: none;
    outline: none !important;
    overflow: hidden;
    width: 50px;
    height: 50px;
    @include border-radius(50% !important);

    i {
        font-size: 26px !important;
        position: relative !important;
        left: 0px !important;
        top: 6px !important;
    }
}

.btn:not(.btn-link):not(.btn-circle) {
    box-shadow: 0 2px 5px rgba(0,0,0,.16),0 2px 10px rgba(0,0,0,.12);
    @include border-radius(2px);
    border: none;
    font-size: 13px;
    outline: none;

    &:hover {
        outline: none;
    }

    i {
        font-size: 20px;
        position: relative;
        top: 3px;
    }

    span {
        position: relative;
        top: -2px;
        margin-left: 3px;
    }
}

.btn-warning,
.btn-warning:hover,
.btn-warning:active,
.btn-warning:focus {
    background-color: #ff9600 !important;
}

.btn-danger,
.btn-danger:hover,
.btn-danger:active,
.btn-danger:focus {
    background-color: #fb483a !important;
}

.btn-info,
.btn-info:hover,
.btn-info:active,
.btn-info:focus {
    background-color: #00b0e4 !important;
}

.btn-success,
.btn-success:hover,
.btn-success:active,
.btn-success:focus {
    background-color: #2b982b !important;
}

.btn-primary,
.btn-primary:hover,
.btn-primary:active,
.btn-primary:focus {
    background-color: #1f91f3 !important;
}

.btn-default,
.btn-default:hover,
.btn-default:active,
.btn-default:focus {
    background-color: #fff !important;
}

.btn-group,
.btn-group-vertical {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.16), 0 2px 10px rgba(0, 0, 0, 0.12);

    .btn {
        box-shadow: none !important;
        @include border-radius(0);

        .caret {
            position: relative;
            bottom: 1px;
        }
    }

    .btn-group {
        box-shadow: none !important;
    }

    .btn + .dropdown-toggle {
        border-left: 1px solid rgba(0,0,0,0.08) !important;
    }
}