.top-navigation {
    background-color: #fff;
    position: fixed;
    width: 100%;
    z-index: 9999;
}
ul {
  list-style: none;
  margin-top: 1.7rem;

  }
  
 .top-navigation .logo {
     height: 70px;
    height: 4.375rem;
  }
.top-navigation .links {
    float: right;
    font-family: 'Roboto', sans-serif;
    color: #838994;
    font-size: 16px;
    margin-top: 25px;
    -webkit-font-smoothing: antialiased;
}
.top-navigation .links li {
    display: inline-block;
    margin-left: 25px;
}
.top-navigation .links .active {
    color: #4c5058;
    font-weight: 500;
}
.top-navigation .links li:hover {
    cursor: pointer;
    color: #333333;
}
.introduction {
    background-image: url('images/first-background.jpg');
    background-position: center bottom;
    background-repeat: no-repeat;
    background-size: cover;
    height: 45.938rem;
   overflow: auto;
}
.introduction h1 {
    margin-top: 17.5rem;
    font-size: 3.125rem;
}
.introduction h1, .introduction h3 {
    color: white;
    text-align: center;
    font-weight: 300;
}
button{
  display:block;
  margin: 0 auto;
}

.introduction .content > button {
    width: 9.688rem;
    background-color: #f15a29;
    border-color: #f15a29;
    text-shadow: none;
    border-style: none;
    border-radius: 4px;
    padding: 1rem 1.5rem;
    color: white;
    font-size: 1.125rem;
    text-align: center;
}
.introduction .buttons {
    color: white;
    text-align: center;
    margin-top: 1.563rem;
    
/*Icons*/
}
.content {
    padding: 0 0.938rem;
    margin: 0 auto;
    min-width: 37.5rem;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
    box-sizing: border-box;
}
.cases h2 {
    font-size: 2.75rem;
    font-weight: 300;
    margin: 1.625rem 0 3.125rem;
}
.cases .devices h3 {
    font-size: 1.563rem;
    font-weight: 400;
    margin-top: 2.5rem 0px 1.875rem;
}

.cases .content {
    margin-top: 7.875rem;
    padding: 0px 0px;
    color: #1d1e21;
    text-align: center;
}



.li {
    display: list-item;
    text-align: horizontial;
}
.devices > li {
    width: 33.3333333%;
    float: left;
    display: inline-block;
}

/*Footer*/

.social .icons > li {
    border-radius: 1.25rem;
    width: 2.5rem;
    height: 2.5rem;
    display: inline-block;
    margin: 1.25rem 5px;
    border: 1px solid #eaebec;
    padding: 0.625rem 0;
    text-align: center;
    box-sizing: border-box;
}
.social .icons > li:hover {
    cursor: pointer;
}
.social .twitter {
    color: #55acee;
}
.social .facebook {
    color: #4c66a4;
}
.social .instagram {
    color: #3f729b;
}
.social .copy {
    font-size: 0.9rem;
    font-weight: 300;
    color: #838994;
    display: inline-block;
}

.social .content {
    display: inline-block;
}


/*'Josefin Sans', sans-serif; body text*/