html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:"";content:none}table{border-collapse:collapse;border-spacing:0}:root{--active-color: #1A8CD8;--inactive--color: #0E4D77;--light: #FAFAFA;--dark: #444}body{display:flex;flex-direction:column;min-height:100vh;gap:1rem}a{color:var(--light)}#header{padding:1.5rem 1rem;color:var(--light);background-color:var(--dark)}#header h1{font-weight:700;font-size:x-large}#main{display:flex;flex-direction:column;gap:1.5rem;width:calc(100% - 2rem);max-width:400px;margin-left:auto;margin-right:auto;padding-left:1rem;padding-right:1rem}#select-margin-size header{padding-bottom:.5rem}#margin-size-list{margin:0;padding:0;list-style:none;display:flex;gap:1rem;flex-shrink:0;flex-grow:0}#margin-size-list li{width:calc(25% - 1rem)}button{width:100%;padding:.6rem;background-color:var(--inactive--color);border-style:none;color:var(--light)}button.active{background-color:var(--active-color)!important}#canvas-wrap{position:relative;padding:0;box-sizing:content-box;aspect-ratio:1 / 1}#canvas{position:absolute;left:0;top:0;border:0;max-width:100%;box-sizing:content-box;padding:0;margin:0;border:#333 1px solid}#footer{color:var(--light);background-color:var(--dark);margin-top:auto;padding:1rem}#footer .copy{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}#footer .sns-icons{display:flex;gap:1rem;justify-content:center}