body{
    margin: 0;
    font-size: 16px;
    font-family: Verdana, sans-serif;
    color: #333;
}

header{
    background: darkolivegreen;
    color: #fff;
    text-align: center;
    padding-top: 64px;
}

header h1,
header p{
    margin: 0;
}

header img{
    width: 280px;
    vertical-align: bottom;
}

.btn{
    text-decoration: none;
    background: #fff;
    color: darkslategrey;
    display: block;
    width: 140px;
    line-height: 44px;
    margin: 40px auto 48px;
    font-size: 14px;
    font-weight: bold;
    border-radius: 4px;
}

.btn:hover{
    opacity: 0.9;
}

.features img{
    width: 100%;
}

.features > h1{
    text-align: center;
    padding: 64px 0;
    font-weight: normal;
}

.features .container{
    margin: 0 32px;
}

.features p {
    line-height: 1.8;
}

.features section{
    padding-bottom: 64px;
}

.members{
    background: #f2f2f2;
}

.members > h1{
    text-align: center;
    padding: 64px 0;
    font-weight: normal;
}

.members ul{
    list-style: none;
    text-align: center;
    margin: 0;
    padding: 0%;
}

.members img{
    width: 160px;
    border-radius: 50%;
}

.members h2{
    font-size: 20px;
}

.members li{
    padding-bottom: 64px;
}

.call-to-action{
    background: darkolivegreen;
    color: #fff;
    text-align: center;
    padding: 64px 0;
}

.call-to-action h1{
    font-weight: normal;
}

.call-to-action .btn{
    margin: 0 auto;
}

footer{
    padding:64px 0;
    background: #323135;
    color: #98969c;
    text-align: center;
}

@media(min-width:900px){
    header .container{
        display: flex;
        width: 800px;
        margin: 0 auto;
    }

    header .info{
        width: 60%;
        align-self: center;
    }

    header .pic{
        width: 40%;
    }

    .features .container{
        width: 800px;
        margin: 0 auto;
    }

    .features section {
        display: flex;
        justify-content: space-between;
    }

    .features section:nth-child(even){
        flex-direction: row-reverse;
    }

    .features .pic {
        width: 50%;
    }

    .features .info{
        width: calc(50% - 32px);
    }

    .members ul {
        width: 800px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
    }

    .members li{
        width: 250px;
    }
}