/* standard */

.t_Img172 img {
max-width: 100vw;
max-width: calc( 100vw - 1rem);
max-height: 100vh;
max-height: calc( 100vh - 1rem);
/*margin: 0.5rem;*/
}

.t_Img172  .t_gallery .prev_next {
display: flex;
justify-content: center;
}

.t_Img172 .prev {
display: inline-flex;
width: calc( 50% - 150px );
justify-content: flex-end;
}

.t_Img172 .num {
display: inline-flex;
/*width: 150px;*/
justify-content: center;
}

.t_Img172 .next {
display: inline-flex;
width: calc( 50% - 150px );
justify-content: flex-start;
}