body {
 font-family: comicsansms;
 animation: colorshift 1s infinite alternate;
text-align: center;
background-color: #80ea80;
}
#guys {
background-color: #ff7363;
padding: 10px;
border:dashed white;

}

#openCard{
  background-color: red;
  color: white;
  padding: 10px;
}
.hidden {
display: none;
}

@keyframes colorshift {
    0%{color: green;}
    60% {color:#f07000;}
    100% {color: red;}
}