*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

html,body{
    font-family: 'Roboto';
    background-color: #fcfcfc;
}

.container{
    max-width: 1280px;
    width: 100%;
    padding: 0 2%;
    margin: 0 auto;
}

header{
    background-color: #000;
    padding: 15px 0;
    text-align: center;
}

header .container h1 a{
    color: #fff;
    text-align: center;
    font-size: 35px;
    text-decoration: none;
}

header .container .dark-button i{
    color: #fff;
    position: absolute;
    right: 20px;
    top: 25px;
    font-size: 25px;
    cursor: pointer;
}

main{
    margin-top: 25px;
}

main .container ul {
    list-style-type: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

main .container ul li{
    margin-bottom: 20px;
    padding: 15px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0px 0px 23px 5px rgba(0, 0, 0, 0.1);
    -webkit-box-shadow: 0px 0px 23px 5px rgba(0, 0, 0, 0.1);
    -moz-box-shadow: 0px 0px 23px 5px rgba(0, 0, 0, 0.1);
    width: 48%;
    text-align: center;
    border: 1px solid rgba(128, 0, 128, 0.16);
}

main .container ul li .client-header{
    margin-bottom: 10px;
}

main .container ul li .client-main p{
    margin-top: 10px;
}

main .container ul li .client-main h4{
    font-size: 14px;
}

main .container ul li button{
    background-color: rgb(0, 0, 0);
    color: #fff;
    border: none;
    outline: none;
    transition: .4s;
    padding: 5px 10px;
    font-size: 18px;
    border-radius: 5px;
    cursor: pointer;
}

main .container ul li button:hover{
    background-color: #525252;
}

@media screen and (max-width:768px){
    .container{
        padding: 0 4%;
    }
    main .container ul li{
        width: 100%;
    }
}