.tit_style06 {
 font-size: 24px;
 font-size: 2.4rem;
 letter-spacing: 0.1em;
 font-weight: 500;
 border-bottom: 2px solid #f3f3f3;
 padding-bottom: 8px;
 position: relative;
 margin: 0 0 35px;
}

.tit_style06::after {
 content: "";
 position: absolute;
 left: 0;
 bottom: -2px;
 width: 70px;
 height: inherit;
 border-bottom: 2px solid var(--main-color);
}

@media (max-width : 810px){
.tit_style06 {
 font-size: 22px;
 font-size: 2.2rem;
}
}