.postcard {
    background: #ffffcc;
    border: 1px solid #cccc99;
    width: 800px;
    min-height: 600px;
    margin: 20px auto;
    padding: 25px;
    font-family: "Times New Roman", serif;
    color: #333333;
    text-align: left;
    line-height: 1.5;
    position: relative;
    box-shadow: none;
    max-width: 95%;
    box-sizing: border-box;
}

.postcard:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: repeating-linear-gradient(to right, #cccc99, #cccc99 1px, transparent 1px, transparent 2px);
}

.postcard:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: repeating-linear-gradient(to right, #cccc99, #cccc99 1px, transparent 1px, transparent 2px);
}

.postcard .stamp {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 80px;
    height: 100px;
    background: url('/stamp.png') no-repeat;
    background-size: contain;
    transform: rotate(5deg);
}

.postcard .return-address {
    position: absolute;
    top: 15px;
    left: 15px;
    font-size: 12px;
    line-height: 1.2;
    color: #666666;
    border-bottom: 1px dotted #cccc99;
    padding-bottom: 2px;
    width: auto;
    white-space: nowrap;
}

.postcard .destination-address {
    position: absolute;
    right: 15px;
    bottom: 15px;
    font-size: 12px;
    line-height: 1.2;
    text-align: right;
    width: 150px;
}

.postcard .content {
    margin: 120px 25px 100px 25px;
    min-height: 300px;
    font-size: 14px;
    line-height: 1.4;
}

pre {
    font-size: 11px;
}

@media screen and (max-width: 600px) {
    .postcard {
        padding: 15px;
        min-height: 400px;
    }
    
    .postcard .content {
        margin: 80px 15px 60px 15px;
        min-height: 200px;
    }
    
    .postcard .stamp {
        width: 60px;
        height: 80px;
    }
    
    .postcard .return-address,
    .postcard .destination-address {
        font-size: 11px;
    }
}

.header>h1 {
    display: inline;
}

.deprecation {
    color: red;
    border: 2px dashed red;
    padding: 0 20px;
    margin: 10px;
    /* text-align: center; */
}