#header {
    position: fixed;
    width: 100%;
    height: 55px;
    margin-top: -5px;
    background-color: #005fda;
    animation-name: header-bar;
    animation-duration: 2s;
    animation-iteration-count: infinite;
    animation-direction: alternate-reverse;
}

@keyframes header-bar {
    from {
        background-color: #005fda;
    }
    to {
        background-color: #0091ff;
    }
}


}
#header .logo {
    float: left;
    height: 100%;
    margin-top: 1px;
}
#header img {
    width: 15%;
    height: 42px;
    margin: 1px;
    color: #009999;
}
#header .logo: after {
    content: "";
    display: table;
    clear: both;
}
.logo img:hover {
    transition: 3sec;
    transform: scale(1.0, 1.5);
}
#main-nevigation {
    padding: 10px;
    margin-top: -60px
}
#main-nevigation ul {
    text-align: center;
    text-decoration: none;
    margin-top: 0px;
}
#header ul li {
    display: inline-block;
    padding: 10px;
    font-family: cursive;
    font-size: 15px;
}
#header ul li a {
    display: inline block;
    text-decoration: none;
    padding: 5px;
    margin: 3px;
    color: #cc6699;
    font-weight: bolder;
}
#header ul li a:hover {
    color: black;
}
#header {
    position: fixed;
    width: 100%;
    height: 45px;
    margin-top: -18px;
    background-color: #005fda;
    animation-name: header-bar;
    animation-duration: 2s;
    animation-iteration-count: infinite;
    animation-direction: alternate-reverse;
}
@keyframes header-bar {
    from {
        background-color: #005fda;
    }
    
    to {
        background-color: #0091ff;
    }
}

}
#header .logo {
    float: left;
    height: 100%;
    margin-top: 1px;
}
#header img {
    width: 15%;
    height: 42px;
    margin: 1px;
    color: #009999;
}
#header .logo: after {
    content: "";
    display: table;
    clear: both;
}
.logo img:hover {
    transition: 3sec;
    transform: scale(1.0, 1.5);
}
#main-nevigation {
    padding: 10px;
    margin-top: -60px
}
#main-nevigation ul {
    text-align: center;
    text-decoration: none;
    margin-top: 0px;
}
#header ul li {
    display: inline-block;
    padding: 10px;
    font-family: cursive;
    font-size: 15px;
}
#header ul li a {
    display: inline block;
    text-decoration: none;
    padding: 5px;
    margin: 3px;
    color: #cc6699;
    font-weight: bolder;
}
#header ul li a:hover {
    color: black;
}
h3 {
    color: brown;
    font-size: 25px;
    text-align: center;
}
.ppi_1 {
    display: none;
    width: 20%;
    position: absolute;
    overflow: scroll;
    height: 60%;
    background-color: gainsboro;
    margin-left: -50px;
    margin-top: 60px;
}
.ppi_2 {
    display: none;
    width: 18%;
    position: absolute;
    overflow: scroll;
    height: 60%;
    background-color: gainsboro;
    margin-left: 120px;
    margin-top: 60px;
}
.btn_ppi_1 {
    color: black;
    background-color: burlywood;
    border-color: #b32b2b;
    border-radius: 10px;
    border: solid 2px brown;
    padding: 2px;
    margin-top: 30px;
    margin-right: 40px;
}
.btn_ppi_2 {
    color: black;
    background-color: burlywood;
    border-color: #b32b2b;
    border-radius: 10px;
    border: solid 2px brown;
    padding: 2px;
    margin-top: 30px;
    margin-right: 40px
}
#btn_ppi_click {
    background-color: #d87250;
    border: solid 2px brown;
    border-radius: 16px;
    height: 30px;
    padding: 2px;
}
ul {
    list-style: none;
}
ul li {
    color: darkslateblue;
    ;
}
ul {
    list-style: none;
}
.ppi_1.active {
    display: block;
}
.ppi_2.active {
    display: block;
}
#div2.overlay {
    width: 100%;
    height: 100%;
    position: absolute;
    background-color: transparent;
    z-index: -1;
}