html {
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    font-family: sans-serif;
    font-size: 16px;
    margin: 0;
    background-image: linear-gradient(260deg, #2376ae 0%, #c16ecf 100%);
}

a {
    color: white;
    font-weight: 100;
    letter-spacing: 2px;
    text-decoration: none;
    background: rgba(0, 0, 0, .2);
    padding: 20px 5px;
    display: inline-block;
    width: 100%;
    text-align: center;
    transition: all 0.5s
}

a:hover {
    background: rgba(0, 0, 0, .3);
}

.wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 50px;
}
img{
    max-width: 100%;
}

input{
    padding: 10px;
    border: 0;
}
section, footer{
    text-align: center;
    background: rgba(0, 0, 0, .2);
    padding: 20px;
    margin: 20px 0;
    color: white;
    font-weight: 100;
}


/*flex*/
.slider-nav ul{
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;

}
.slider-nav li{
    flex:2; /* flex item */
    border: 1px solid goldenrod;
    text-align: center;
    display: flex; /* flex container */
}
.slider-nav .arrow{
    flex: 1;
}
.slider-nav a{
    flex-basis: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.slider-nav spen{
    display: block;
    width: 100%;
    
}
.arrow a{
    font-size: 30px;
    
}