body {
    width: 1024px;
    margin: 0 auto;
    height: 100%;

}

.leftline {
    height:3900px;
    float: left;
    width: 130px;
    background-color: #214869;
}

header {
    height: 300px;
    background-color: #abe5e5;
}
.logoimage {
    float: left;
    padding-left: 50px;
    padding-top: 30px;
}
nav {
    padding-bottom: 35px;
}

h1 {
    font-size: 70px;
    color: #214869;
    padding-top: 60px;
    padding-left: 435px;
}
h2 {
    font-size: 25px;
    color: #231F20;
    padding-top: 20px;
    padding-left: 435px;
    padding-bottom: 20px;
}

h3 {
    font-size: 20px;
    color: #EB6B35;
}

h3 a {
    display: block;
    width: 380px;
    font-size: 15px;
    text-align: right;
    line-height: 60px;
    color: #EB6B35;
    text-decoration: none;
}

h4 {
    font-size: 20px;
    color: #EB6B35;
    padding-top: 60px;
    padding-bottom: 40px;
    padding-left: 440px;
}

.menu {
    width: 400px;
    height: 40px;
    margin-top: 20px;
    padding-bottom: 20px;
    background-color: #abe5e5;
    position: relative;
}

.download {
    margin-top: -380px;
    margin-left: 440px;
    height: 380px;
    background-color: #214869;
    position: relative;
}

.cover-image {
    padding-top: 20px;
    margin-left: 20px;
    float: left;
}
.cover-image2 {
    padding-top: 20px;
    margin-left: -20px;
    float: right;
}

.download-text p{
    position: absolute;
    width: 305px;
    height: 70px;
    margin-left: 279px;
    margin-top: 155px;
    background-color: #ffffff;
}

.download-text p>img {
    float: left;
    padding-right: 15px;
}

.download-text p>a {
    text-decoration: none;
    color: #EB6B35;
    font-weight: bold;
    position: absolute;
    margin-top: 11px;
}

article>img {
    float: left;
    padding-left: 70px;
}

article>p {
    padding-left: 440px;
    padding-bottom: 15px;
    width: 515px;
    text-align: justify;
}

.authors {
    color: #EB6B35;
    padding-bottom: 3px;
}
#myBtn1, #myBtn2, #myBtn3, #myBtn4 {
    display: block;
    float: right;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    font-size: 12px;
    border: none;
    outline: none;
    background-color: #fadacc;
    color: #ea6a36;
    cursor: pointer;
    padding: 5px;
    margin-right: 70px;
}

#myBtn1:hover, #myBtn2:hover, #myBtn3:hover, #myBtn4:hover {
    background-color: #555;
}