/*
* 共通
*/
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
}

.d-none {
    display: none !important;
}
/* ---------------------
* header
--------------------- */
.header-wrapper {
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 30px 5% 15px;
}

img.logo {
    height: 28px;
    width: auto;
    padding-top: 8px;
}

/* ---------------------
* main
--------------------- */
main {
    max-width: 512px;
    width: 100%;
    display: block;
    margin: 0 auto;
    padding: 15px;
}

.flow-title {
    padding: 0.5rem 1rem;
    border-top: 3px solid rgb(17, 17, 17);
    border-bottom: 3px solid rgb(17, 17, 17);
}

.step-title {
    padding: 0.5rem 1rem;
    border-left: 4px solid rgb(17, 17, 17);
}

.step-box {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
}

.step-box img {
    width: 100%;
}