.wrong_answer_mark {
    font-size: 4em;
    color: red;
    margin-right: auto;
    margin-left: auto;
    opacity: 0;
}
.next_block_box{
    display: none;
    padding: 20px;
    color:black;
    margin-bottom: 15px;
    position: absolute;
    left: 20vw;
    top: 25vw;
    width: 60vw;
    opacity: 0.8;
    border-style: solid;
    border-width: 5px;
    border-color: darkslategrey;
}
.emph{
    color: #ff0000;
}
.black{
    color: black;
}
#left_panel{
    width:50%;
    display:inline-block;
}

#right_panel{
    width:50%;
    display:inline-block;
    flex-direction:column;
    text-align:right;
    justify-content:right;
}
#keyword{
    display:block;
    font-size: 2.3em;
}
.main{
    color: #31940F;
}
.sub{
    color: #0000FF;
}
.otree-timer{
    display: none;
}
@keyframes blink{
    0%{opacity: 0;}
    50%{opacity: .5;}
    100%{opacity: 1;}
}

#iat-task {
    display: none;
}