.button {
    background-color:    #4CAF50; /* Green #4CAF50 #ff9e9e #ff0000 */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

.buttonImpressum {
    background-color: red; 
    border: none;
    color: white;
    padding: 0px 0px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size:16px;
}

#hintergrundNavigation{
    
    
    background: red;
    background: -webkit-linear-gradient(top, red 0%,red 100%);
    background: -moz-linear-gradient(top, red 0%,red 100%);
    background: -o-linear-gradient(top, red 0%,red 100%);
    background: -ms-linear-gradient(top, red 0%,red 100%);
    background: linear-gradient(top, red 0%,red 100%);
    margin-left: auto;
    margin-right: auto;
    border-bottom: 1px solid #4e0303;
    border-top: 1px solid #4e0303;
}

.menu,
.menu ul,
.menu li,
.menu button {
    margin: 0px;
    padding: 0;
    border: none;
    outline: none;
}
 
.menu {
    position: relative;
    margin-left: 17%;
    margin-top: 0%;
    height: 60px;
    width: 80%;
    background: red;
    background: -webkit-linear-gradient(top, red 0%,red 100%);
    background: -moz-linear-gradient(top, red 0%,red 100%);
    background: -o-linear-gradient(top, red 0%,red 100%);
   background: -ms-linear-gradient(top, red 0%,red 100%);
    background: linear-gradient(top, red 0%,red 100%);
 
    -webkit-border-radius: 1px;   /*runde Kanten*/
    -moz-border-radius: 1px;
    border-radius: 1px;
}
 
.menu li {
    position: relative;
    list-style: none;
    float: left;
    display: block;
    height: 60px;
}

.menu li button {
    display: block;
    padding: 0 10px;    /* Abstand zwischen Menüpunkten */
    margin: 0 0px ;
    line-height: 58px;
    text-decoration: none;
    background-color: #4c4e5a;
    background-color: hsla(0, 0%, 00%, 0.001);
 
    border-left: 1px solid #4e0303;
    /*border-right: 1px solid #4e0303;*/
 
    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
    font-size: 18px;
 
    color: white;
    text-shadow: 1px 1px 1px rgba(0,0,0,.6);
 
    -webkit-transition: color .2s ease-in-out;
    -moz-transition: color .2s ease-in-out;
    -o-transition: color .2s ease-in-out;
    -ms-transition: color .2s ease-in-out;
    transition: color .2s ease-in-out;
}
 
.menu li:first-child button { border-left: none; }
.menu li:last-child button { border-right: none; }
 
.menu li:hover > button { color: white; }

.menu ul {
    position: absolute;
    top: 40px;
    left: 0;
    z-index: 10;
    opacity: 0;
    background: #1f2024;
 
    -webkit-border-radius: 0 0 5px 5px;
    -moz-border-radius: 0 0 5px 5px;
    border-radius: 0 0 5px 5px;
 
    -webkit-transition: opacity .25s ease .1s;
    -moz-transition: opacity .25s ease .1s;
    -o-transition: opacity .25s ease .1s;
    -ms-transition: opacity .25s ease .1s;
    transition: opacity .25s ease .1s;
}
 
.menu li:hover > ul { opacity: 1; }
 
.menu ul li {
    height: 0;
    overflow: hidden;
    padding: 0;
 
    -webkit-transition: height .25s ease .1s;
    -moz-transition: height .25s ease .1s;
    -o-transition: height .25s ease .1s;
    -ms-transition: height .25s ease .1s;
    transition: height .25s ease .1s;
}
 
.menu li:hover > ul li {
    height: 36px;
    overflow: visible;
    padding: 0;
}