body{font-size:14px;}
.flex-box .b{/*background:#0f0;*/}
.logo{width:200px;height:auto;}

.flex-box{width:1000px;}
.flex-box .a{width:220px;/*background:blue;*/text-align:left;}
.flex-box .b{flex-grow:1;/*background:#0ff*/;text-align:left;}
.flex-box .c{width:250px;/*background:red;*/text-align:left;}

#slideshow{width:500px;height:208px;}
#slideshow img{width:500px;}
.balkenbox, .balken{width:500px;}