.header_logo{}
.header_logo_img{height:auto; max-width:20rem;}
@media only screen and (max-width: 1000px){
	.header_logo_img{ margin-left: 3.5rem; width: calc(100vw - 3.5rem); max-width: none;}

}
@media only screen and (max-width: 600px){
	.header_logo_img{max-width: none;}

}