*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    font-size: 65.5%;
   
}
body{
    background-color: rgb(148, 10, 95);
color: white;
}
.contenedor{
    display: grid;
    place-content: center;
    height: 844px;
    
}


img{
    border: 4px double yellow;
    animation: mymove 2s infinite;
    width: 390px;
    height: 500px;
}

@keyframes mymove {
    50% {border-color:blanchedalmond;}
    }