.rund {
border-radius: 200px;
-moz-border-radius: 200px;
-webkit-border-radius: 200px
}

.rundecken {
border-radius: 5px;
-moz-border-radius: 5px;
-webkit-border-radius: 5px

}

.blink {
    animation-name: animation_blink;
    animation-timing-function: ease-in;
    animation-duration: 2s; 
    animation-iteration-count: infinite;            
}

@keyframes animation_blink {
    0% { opacity: 1; }
    50% { opacity: 0.1; }
    100% { opacity: 1; }    
}

del { 
    border-radius: 0.2em;
    padding: 0.2em;

    animation-name: animation_blink_5s;
    animation-timing-function: ease-in;
    animation-duration: 2s; 
    animation-iteration-count: 2.5;   
    animation-fill-mode: both;
}

@keyframes animation_blink_5s {
    0% {  
        background-color: white;
    }
    50% {  
        background-color: red;
    }
    100% {  
        background-color: white;
    }
}