.wrap_plan {
    max-width:640px;
    margin: 0 auto;
    box-sizing: border-box;
    position: relative;
}

.wrap_plan a.part_name {
    text-decoration: none;
    border-width: 5px;
    border-style: solid;
    border-radius: 10px;
    padding: .2em 1.5em .2em .5em;
    display: block;
    width: fit-content;
    background-color: #fff;
    position: absolute;
    transform: translate(-50%, 0);
}
.wrap_plan a.part_name:hover {
    opacity: 1;
}
.part_kitchen {
    top: 24%;
    left: 18%;
    border-color:#ea552a;
}
.part_utl {
    top: 11%;
    left: 33%;
    border-color:#84bae5;
}
.part_energy {
    top: 0;
    left: 45%;
    border-color:#c30f23;
}
.part_bath {
    top: 11%;
    right: 26%;
    border-color:#22ac39;
}
.part_stairs {
    top: 11%;
    right: -4%;
    border-color:#804f22;
}
.part_toilet {
    top: 0;
    right: 8%;
    border-color:#faee00;
}
.part_living {
    bottom: 20%;
    left: 53%;
    border-color:#924998;
}
.part_ent {
    right: -3%;
    bottom: 18%;
    border-color:#e4007f;
}
.part_window {
    bottom: 0;
    left: 35%;
    border-color:#00a1e9;
}
.wrap_plan a.part_name:before {
    content: "→";
    display: block;
    position: absolute;
    top: 48%;
    right: .7em;
    transform: translate(0, -50%);
    color: #fff;
    z-index: 10;
    font-size: .7rem;
}
.wrap_plan a.part_name:after {
    content: "";
    width: 1.0em;
    height: 1.0em;
    display: block;
    position: absolute;
    background-color: #333;
    border-radius: 100px;
    right: .4em;
    top: 50%;
    transform: translate(0, -50%);
}
.wrap_plan a.part_name:hover:after {
    background-color: #e63c28;
}

@media screen and (max-width:600px){
.part_energy {
    left: 30%;
}
.part_stairs {
    right: -13%;
}
.part_utl {
    left: 27%;
}
.part_bath {
    right: 22%;
}
.part_ent {
    right: -7.5%;
}
.part_toilet {
    right: 2%;
}
}