@charset "UTF-8";

html {
	font-size: 100%;
}

.popup-content{
    visibility: hidden;
    opacity : 0;
}

#open:checked ~ .popup-content{
    visibility: visible;
    opacity : 1;
    transition: .3s;
}

.open-btn {
    display: block;
    margin: 48px auto;
    font-size: 0.7rem;
    text-align: center;
    background: radial-gradient(yellow, #fff 95%);
    padding: 0.5rem 0.5rem;
    border-radius: 15px;
    border: 2.5px red solid;
    z-index: 10;
    position: absolute;
    top: 20px;
    left: 30px;
}

label.close-btn {
    position: absolute;
    top: -14px;
    right: -14px;
    background: red;
    color: #fff;
    width: 26px;
    height: 26px;
    text-align: center;
    border-radius: 50%;
    font-size: 1.2em;
    font-weight: bold;
    line-height: 1.4;
}

.popup-content{
    position: fixed;
    top: 55%;
    left: 50%;
    min-width: 300px;
    transform: translate(-50%, -50%);
    background-color: #fff;
    border: 3px red solid;
    z-index: 9999;
    transition: .1s;
    line-height: 1.6;
    padding: 15px;
}

input#open {
	display: none;
}


@media screen and (min-width: 850px){
	.open-btn {
		font-size: 1rem;
		left: 50px;
	}
}