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1px;margin-top:20px;padding-bottom:5px;display:flex;align-items:end;justify-content:space-between}.lesson-header.with-return-btn .lesson-header-text{width:70%;overflow-wrap:break-word}.lesson-header .lesson-header-text{font:normal 38px "Roboto Slab",sans-serif;color:#0b9be3;width:75%}.lesson-header .lesson-header-content{display:inline-flex;flex-direction:column}.lesson-area{margin:15px 0 10px;min-width:300px;flex-grow:1}.lesson-area a:hover{color:#0090e3}.yui3-problem-content{border:2px solid #000;margin:20px 0;padding:15px;width:807px}@media screen and (max-width:800px){.lesson-content-container{flex-direction:column}.lesson-area{width:auto}.screenshot-container{visibility:hidden}.return-to-skill-practice-cover{display:block}.return-to-skill-practice{width:157px;display:none}.return-to-skill-practice.mobile{display:flex}.return-to-skill-practice .return-to-skill-practice-link{display:none}.return-to-skill-practice .return-to-skill-practice-link-short{display:inline-flex}}@media screen and (max-width:480px){body.lesson-page #bd{width:calc(100% - 20px)}.return-to-skill-practice-cover{width:calc(100% - 20px);display:block}.return-to-skill-practice{width:203px;display:none}.return-to-skill-practice.mobile{display:flex}.return-to-skill-practice .return-to-skill-practice-link{display:inline-flex}.return-to-skill-practice .return-to-skill-practice-link-short{display:none}.lesson-header{display:block;font-size:30px;border-bottom:none;margin-top:0}.lesson-header.with-return-btn{margin-top:40px}.lesson-header .lesson-header-content{flex-direction:row;width:100%}}/* YUI CSS Detection Stamp */
#yui3-css-stamp.ixl_instruction_css_lesson-min { display: none; }
#related-lessons-and-skills{margin-left:auto;position:sticky;top:0;align-self:flex-start}#related-lessons-and-skills.with-return-btn{top:51px}.related-links{width:240px;background:#f7fafc;border-radius:5px;padding:10px;float:right;margin-top:20px;margin-left:10px}.related-links .related-links-list{margin:10px 0}.related-links #related-lessons,.related-links #related-skills{position:relative}.related-links #related-lessons .related-link,.related-links #related-skills .related-link{margin-bottom:10px;animation:expand .3s ease-out}.related-links #related-lessons .related-link a,.related-links #related-skills .related-link a{text-decoration:none;padding:0;color:#00659e;font:normal 14px Verdana,sans-serif}.related-links #related-lessons .related-link a:hover,.related-links #related-skills .related-link a:hover{text-decoration:underline;color:#0090e3}.related-links #related-lessons.collapsed .related-links-list,.related-links #related-skills.collapsed .related-links-list{margin-bottom:0}.related-links #related-lessons.collapsed .related-link,.related-links #related-skills.collapsed .related-link{animation:collapse .3s ease-out forwards}.related-links #related-lessons.collapsed .related-links-subheader::after,.related-links #related-skills.collapsed .related-links-subheader::after{background:transparent url(data:image/svg+xml;base64,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) no-repeat}.related-links .related-links-header{font:bold 18px "Open Sans",sans-serif;color:#333;margin-bottom:10px}.related-links .related-links-subheader{font:bold 14px "Open Sans",sans-serif;color:#00578a;border:none;background:0 0;text-align:left;padding:0 10px 0 0;outline:0;display:inline-block}@keyframes expand{0%{max-height:0;opacity:0;margin-bottom:0;visibility:hidden}60%{margin-bottom:10px}100%{opacity:1;max-height:100px;margin-bottom:10px}}@keyframes collapse{0%{max-height:100px;opacity:1;margin-bottom:10px}100%{max-height:0;opacity:0;margin-bottom:0;visibility:hidden}}@media screen and (max-width:800px){#related-lessons-and-skills{margin-left:0;align-self:auto}.related-links{order:2;float:none;width:auto;margin-left:0}.related-links .related-links-subheader{font-size:16px}.related-links .related-links-subheader::after{margin-top:4px}}/* YUI CSS Detection Stamp */
#yui3-css-stamp.ixl_instruction_css_related-links-min { display: none; }