.pr-top-left,
.pr-top-right {
    position: relative;
    font-family: "Helvetica Neue", "Helvetica", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Arial", "Yu Gothic", "Meiryo", sans-serif;
}

.pr-top-left:after,
.pr-top-right:after {
    content: "PR";
    display: block;
    font-size: 12px;
    position: absolute;
    top: 10px;
    color: #555;

    background-color: #FFF;
    padding: 1px 3px;

    z-index: 999999;
}

.pr-top-left:after {
    left: 10px;
}

.pr-top-right:after {
    right: 10px;
}

.pr-btn-top,
.pr-btn-bottom,
.pr-btn-left,
.pr-btn-right {
    position: relative;
    display: block;
    font-family: "Helvetica Neue", "Helvetica", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Arial", "Yu Gothic", "Meiryo", sans-serif;
}

.pr-btn-top::after,
.pr-btn-bottom:after,
.pr-btn-left:after,
.pr-btn-right:after {
    content: "PR";
    font-size: 8px;
    color: #555;

    background-color: #FFF;
    padding: 1px 3px;

    z-index: 999999;
    position: absolute;
}

.pr-btn-top::after{
    transform: translateX(-50%) translateY(0);
    margin-top: -16px;
    top: 0;
    left: 50%;
}


.pr-btn-bottom::after {
    transform: translateX(-50%) translateY(250%);
    margin-bottom: -16px;
    bottom: 0;
    left: 50%;
}

.pr-btn-left::after {
    transform: translateX(0) translateY(0%);
    top:50%;
    left: 0;
    margin-top: 2px;
    margin-left: 2px;
}


.pr-btn-right::after {
    transform: translateX(0) translateY(0%);
    top:50%;
    right: 0;
    margin-top: 2px;
    margin-right: 2px;
}

/* --- 全体のボーダーを完全に削除 --- */
* {
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
 
  }