:root {
    --white: #fff;
    --primary: #007bff;
    --secondary: #6c757d;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    --dark: #343a40;
    --light: #f8f9fa;
}

/* text color */

.text-primary{color: var(--primary);}
.text-secondary{color: var(--secondary);}
.text-success{color: var(--success);}
.text-danger{color: var(--danger);}
.text-warning{color: var(--warning);}
.text-info{color: var(--info);}
.text-dark{color: var(--dark);}
.text-light{color: var(--light);}


/* bg-colors */
.bg-primary{ background-color: var(--primary);}
.bg-secondary{ background-color: var(--secondary);}
.bg-success{ background-color: var(--success);}
.bg-danger{ background-color: var(--danger);}
.bg-warning{ background-color: var(--warning);}
.bg-info{ background-color: var(--info);}
.bg-dark{ background-color: var(--dark);}
.bg-light{ background-color: var(--light);}

/* buttons */

.btn {
    cursor:pointer;
    display:inline-block;
    padding:10px 30px;
    border:none;
    border-radius:5px;
}

.btn:hover{
    opacity: 0.9;
}

.btn-primary{
    color:var(--white);
    background-color: var(--primary);
}

.btn-secondary{
    color:var(--white);
    background-color: var(--secondary);
}

.btn-success{
    color:var(--white);
    background-color: var(--success);
}

.btn-danger{
    color:var(--white);
    background-color: var(--danger);
}

.btn-warning{
    color:var(--white);
    background-color: var(--warning);
}

.btn-info{
    color:var(--white);
    background-color: var(--info);
}

.btn-dark{
    color:var(--white);
    background-color: var(--dark);
}

.btn-light{
    color:var(--white);
    background-color: var(--light);
}

.btn-outline {
    background:transparent;
    border:1px solid var(--white);
    color:var(--white);
}

.btn-outline-primary {
    background:transparent;
    border:1px solid var(--primary);
    color:var(--dark);
}

.btn-outline-primary:hover{
    background-color: var(--primary);
    border:1px solid var(--primary);
    color:var(--white);
}



/* flex items */

.flex-items{
    display:flex;
    justify-content: center;
    text-align:center;
    height:100%;
}

.flex-items > div {
    padding: 20px;
    flex-basis: 100%;
}



/* flex columns */

.flex-columns.flex-reverse .row{
    flex-direction: row-reverse;
}

.flex-columns .row{
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    width:100%;
}

.flex-columns .column {
    flex: 1;
}

.flex-columns .column .column-1 , 
.flex-columns .column .column-2 {
    height:100%;
}

.flex-columns .column-2{
    display:flex;
    flex-direction: column;
    align-items:flex-start;
    justify-content: center;
    padding: 3rem;
}

.flex-columns img{
    width:100%;
    height: 100%;
}


/* flex grid */
.flex-grid .row{
    display:flex;
    flex-wrap: wrap;
    padding: 0 .4rem;
}

.flex-grid .column {
    flex:25%;
    padding: 0 .4rem;
}


/* section */

.section-header {
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem;
}

.section-header h2{
    font-size: 4rem;
    margin: 2rem 0;
}

.section-padding {
    padding: 2rem 2rem 4rem;
}

/* cards */
.card {
    color:#fff;
    font-weight: 700;
}

.card-body{
    padding: 2rem;
}


@media(max-width: 768px){
    .flex-items{
        flex-direction: column;
    }

    .flex-columns .column {
        flex: 100%;
    }

    .flex-items > div{
        padding:10px;
    }

    .flex-grid .column {
        flex: 50%;
    }

}